<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
    <style type="text/css">
        body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}
    </style>
    <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=a2mxOoZ8cIHNQ5ZE4VlyCpN1nmIQSSF3"></script>
    <script type="text/javascript" src="http://api.map.baidu.com/library/AreaRestriction/1.2/src/AreaRestriction_min.js"></script>
    <title>获取地图显示范围</title>
</head>
<body>
    <h3>Map Test</h3>
    <div id="allmap"></div>
    <script type="text/javascript">
        // 百度地图API功能
        var map = new BMap.Map("allmap");  // 创建Map实例
        map.centerAndZoom(new BMap.Point(116.4035,39.915),14);
        var bs = map.getBounds();   //获取可视区域
        var bssw = bs.getSouthWest();   //可视区域左下角
        var bsne = bs.getNorthEast();   //可视区域右上角
        alert("当前地图可视范围是：" + bssw.lng + "," + bssw.lat + "到" + bsne.lng + "," + bsne.lat);
    </script>
</body>
</html>
